Cal. Elections Code - ELEC § 16540. Section 16540.
On the fifth day after the end of the time for filing contestant’s affidavit, the clerk of the superior court shall present the affidavits of the contestant and the defendant and proof of posting of contestant’s affidavit to the presiding judge of the superior court, or anyone acting in his or her stead, who shall forthwith designate the time and place of hearing, the time for which shall be not less than 10 nor more than 20 days from the date of the order.